Move over, baby name books — this kindergarten class just rewrote the rules of identity, one “Hello My Name Is” sticker at a time.

Jordan Lake, a fifth-year kindergarten teacher, is going viral on Instagram after filming himself letting his pint-sized pupils temporarily ditch their given names in favor of something a little more … imaginative.

“Letting students change their name for the day because they’re only young once,” he titled the Reel — and buckle up, because the results are exactly as delightfully unhinged as you’d hope.

In the clip topping 7.5 million views, a jovial Lake sits at his desk, armed with a stack of name tags and a Sharpie, calmly preparing for chaos.

Spoiler alert: chaos delivered.

“What do you want your name to be for the rest of the day?” Lake asks one student off-camera.

“Marshmallow,” the child answers without a single beat of hesitation.

No notes. Next up? A budding branding genius.

“Uh, Ochy,” another student says, barely holding in a giggle after an apparent reference to the AI running app. “I was thinking in my head, I think Ochy is the perfect name.”

Frankly, who are we to argue with that kind of conviction?

“I love that,” Lake replies. “Do you know what it means, or it just sounds cute?”

“Mmm, I don’t know,” the student admits — proving once and for all that vibes are sometimes all you need.

“Nice to meet you, Ochy,” Lake says, handing over the freshly minted identity like it’s no big deal.

The names unfolded in a range from silly to sugary sweet to totally made-up, with requests for Kipper and Morty — seeming nods to the animated TV characters — as well as Shady, Foggy, Hello, Wiggly, and Bhum Bhum Kachoom, and even a retro-bland Cindy.

And in a particularly cheeky turn, Mr. Lake’s students used the “classroom rebrand” to change his name … wait for it … Mr. River.

But viewers were quick to point out there’s something deeper going on beneath the giggles.

The exercise, parents and fellow teachers noted in the comments, doubles as a playful lesson in autonomy, imagination — and, yes, basic respect.

“This is such an awesome idea. Also, it illustrates the idea so clearly that it’s just not hard to call people by their preferred names,” one wrote.

Another added, “Teachers be earning gold stars every damn day!! Love this!”

Others were simply charmed by the tiny trendsetters themselves.

“So cute!!! I love their little voices,” someone else weighed in.

“This is so fun! They will remember this forever!” one other noted.

Another commented, “I absolutely love everything. Name choices, your reactions, the joy.”

And if there were any doubts about Lake’s classroom cred, the comments section shut that down fast.

“Love it !!! Your kiddos are lucky to have you,” one person wrote.

Between Marshmallow, Ochy and whatever comes next, one thing’s clear: in this classroom, creativity is king — and for one glorious day, you can be whoever (or whatever) you want.

As The Post previously reported, experts say a little imagination goes a long way — and that kids don’t need a mountain of toys to have fun.

In fact, too many playthings can send their tiny brains into overload.

“We keep bringing home more and more toys, thinking this is the toy that will get my kid into Harvard,”  Dr. Alexia Metz, an occupational therapist and mom of twins, recently told TODAY.com.

“But then we don’t see the value in their playing because they can’t organize themselves enough to play.”

In a widely cited 2017 study out of the University of Toledo, Metz put toddlers to the test — observing 18- to 30-month-olds in playrooms packed with varying amounts of toys.

Give them 16 options, and it was total toy mayhem — kids ping-ponging from one shiny distraction to the next like tiny, overstimulated social butterflies.

But slash the stash to just four toys, and suddenly, calm prevailed.

The tots slowed down, focused up and actually played — stacking blocks, pressing buttons and diving headfirst into pretend scenarios — the kind of deep, imaginative play child development experts can’t get enough of.